Push pen anxiety is a psychological state characterized by one's excessive push-in push-out of his or her retractable¹ pen, often due to stress or boredom². It is addicting³ because of its sound and its motion of going up and down. You kind of get hypnotized. 

“按笔焦虑症”描述的是一种心理状态，就是在无聊或者压力大的情况下不停地按动伸缩笔的笔帽按钮。这种按动发出的声音和上下伸缩的动作会有点让人上瘾，可能会让你沉迷其中。

 

For example:

 

That kid at the back of the class has a serious case of push pen anxiety. He has been pushing his pen button for nearly half an hour.

班里坐最后一排的那个孩子有严重的按笔焦虑症，他已经连续按动那个笔帽按钮半个小时了。